Practice Core - 3.1.1 | Module 3: Introduction to Magnetism and Transformers | Basics of Electrical Engineering
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

3.1.1 - Core

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the SI unit for magnetic flux?

💡 Hint: It’s named after a famous physicist.

Question 2

Easy

Define magnetomotive force (MMF).

💡 Hint: Think of it as the voltage in electrical circuits.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the unit of magnetic flux density?

  • Watt
  • Weber
  • Tesla

💡 Hint: Think of how strong the magnetic field is.

Question 2

True or False: Hard magnetic materials can easily magnetize and demagnetize.

  • True
  • False

💡 Hint: Remember the characteristics of soft vs. hard magnets.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A magnetic core has a length of 0.5 m, a cross-sectional area of 0.01 m², and a relative permeability of 1000. Calculate the reluctance and MMF needed for a magnetic flux of 0.1 Wb through this core.

💡 Hint: Use the formulas for reluctance and MMF.

Question 2

Compare the energy loss in hysteresis for a soft and hard magnetic material given a constant magnetic cycle. Use different areas of the B-H curves to illustrate your point.

💡 Hint: Analyze the areas under the B-H curves!

Challenge and get performance evaluation